Electric massage machine vibrator



July 7, 1931. c, w. T 1,812,960

ELECTRIC MASSAGE MACHINE VIBRATOR Filed Jan. 21, 1929 Patented July 7,1931 PiA- T E NT OFFICE GHARLES w. KENT, or PEORIA, ILLINOIS ELECTRICzivmssaen MACHINE VI BRATOR .Appl ication filed January 21, 1929. Serial110.333,?67.

invention relates more particularly to the vibrators used inthe.comparatively'small electric massage machines which are primarilyadapted to be held inthe hand of the Buser, and are usually operated byone or more of thesma'll' types ofdry batteries which are slipped intothehandleportion of the machine" and furnish the operating current,though my invention is not necessarily lim- 10 ited to this typeofmachine or to this use.

One object of my invention is the provision ofian adjustable'vibratorprovided with a relatively heavy shield or guard whereby the delicateparts of the vibrator are protected 1 from 'i'njury. I

Another object of my invention is to con struct and-arrange the guardso'that it forms a part of the electrical circuit from the battery tothe. primary coil, thuscombining the 'functions of protectionto theparts and establishingcontact with the battery.

Other objects of my inventionwill appear 7 and be. described in thespecification.

. The novelty of my invention will be herein aftermore fully set forthand specifically pointed out in the claim.

In the accompanying drawings, in which the parts are shown approximatelytwice full s1ze: 301 "Fi'g.:1'is--a .central 'sectional side elevationofthe major portion of an electric massage machine showing my vibratorand associated parts in their proper arrangement and position. 35 1Fig.2 is an end view of the vibrator parts with the "guard removed;

Fig. 3 is a view corresponding to Fig. 2 but with the guard in position.

Fig. 4 is a side view of Fig. 3.

. i The same numerals of reference are used to indicate identical partsin all the figures.

As showing one form of device embodying my invention, though withoutlimiting my- .self to the precise details of construction andarrangement of parts, but availing myself of all changes andmodifications which may be made within the scope of the appended claim,I have shown a device comprising a handle portion 5 which is usually ametallic 5Q*tube which forms one of the terminals of both the primaryand secondary currents, this tube being usually provided at its upperend with a plug or cap 6, either of insulating material or insulatedfrom the handle portion 5 and usually carrying a roller or othersuitable, terminal for the secondary current, the connection to whichwill be described later.

The plug 6 usually carries a rod or tube of insulating material 7, tothe lower end of which the primary coil 8is attached, the lower end ofthis coil carrying a disc 9. preferably of bakelite or other suitableinsulatingmaterial, the disc 9 carrying the parts of the vibrator andits guard.

' On the under side of the disc 9 the vibrator proper 10 is mounted asby screws 11, the vibrator being provided with an armature 12 and acontact 13. One terminal of the primary coil as shown at 14, passesthrough the disc 9 and is connected to the vibrator 10.

A second member 15 is secured to the disc 9 and is formed as shown inFig. 2 and is bent over to bring its contact 16 into alignment with thecontact 13, this member 15 being adapted to be adjusted by means of thescrew 17, the screws 18 serving to hold it in position upon the disc.This member 15 has an extended portion 19 (Fig. 2) upon which one sideof the guard rests when the guard is in position. i

The guard20 is shaped'as shown in Figs. 3 and 4 so that its two endsrest upon the disc upon one side and the extension 19 upon the other,the guard being secured to the disc by I screws 21, while its centerportion is formed as a housing to protect the parts of the vibrator-andas shown in Fig. 2, the central terminal 22 of the battery 23 restsagainst this guard and forms the electrical connection betweenthebattery and the rest of the device.

In that form of device shown in Fig. 1, the

secondary coil 24 is mounted within the handle to slide therein and ismoved by a button 25 projecting through a slot in the handle.

A spring contact 26 is carried by the secondary coil and has one of itsends bent to form a contact withthe handle 5, while its other end 27forms a contact with a conductor 28 which extends from the disc 9acrossthe coil 8 and part way up the tube 7, then passes whereuponthearmature andvibrator move v through an opening in this tube to theinside thereof and is held in place by a plug 29. One terminal of thesecondary coil is connected to the contact spring 26 and the secondterminal 30 Or n; primary coil 8 is connected to the conductor 28. r

A second conductor 31 extends from the disc 9 to a point about oppositethe point to which the conductor 28 passes within the tube 7, where italso passes within this tube and is likewise held by the plug 29, thisconductor extending up through'the plug or cap 6 and is connected to theroller or other secondary terminal of the device. A spring contact32 iscarried bythe secondary coil 24 and is connected to the other terminalof this coil and establishes a contact with the conductor 31. v r V Ihave described these parts of the device so that the electricalconnections will appear complete which they do with the exception of thelower portion of the handle, which, as

is usual in thesedevices carries a removable battery may consist of oneor more cells, the.

other terminal of the battery 22 being in contact with the guard whichin turn is in contact with the member 15, the latter carrying thecontact point 16 normally resting in;

contact with 'thecontact 13 carried by the vibrator 10. The lead ltextends from the vibrator 10' to one terminal of the primary coil, theother terminal being connected to the conductor 28, upon which thespring contact 27 rides when the secondary coil is in the position shownin Fig. 1, this contact 27 being part of the spring 26 which is incontact with the handle 5 completes the primary electrical circuit. Inthe construction shown the secondary coil is moved upward, the contact27 moves past the exposed portion ofthe conductorv 28 and opens thecircuitf 7 During the flow of current, when the secondary coil is, in aposition where its contact 27 is upon the conductor 28, the'coil 8 isenergized and 'itspole pulls the armature 12 and the vibrator 1O upwardthus open ing the circuit between the contacts 13 and 16 which resultsin demagnetizing the pol-e back into contact in theordinary way.

Owing to the comparative-smallness and delicacy of the parts and to thefurther fact that these parts have only a very small range of movementit is advisable that means'for nroperlysetting the posi-tionof thecontacts screw 17 is employed, this screw acting to not only adjust theposition of the member 15 and its contact 16 but to provide a movementlimit for the downward movement of the member 15, or in other words todampen its movement in one direction while at the same timepermittingthis member to vibrate at its outer end though'tnot as freelyas it would without the screw 17 This portion of the device constitutesan adjustable vibrator and, by meansof this adjustment the distancebetween the arma- -ture 12 and thepole of the coil 8 may be varied whileat the same time the other construction is'such, that while inoperation, the parts are acting yieldingly, thereby producing a vibratorwhich stands up well in service and one which consists of very fewsimple parts which, when mounted as shown and protected by the member 20 are not subject to derangement in use even though the device mayaccidentally fall and strike in such way that the Weight of the batterywould come upon the guard 20. v i g i It is to be noted that theoperating parts of the vibrator are "mounted'on the disc 9 so that evenif the guard 20 should be sprung or bent accidentally, no disturbance ofthe setting of the parts would occur, unless of course the guard were tocollapse to an extent which should bring it in contact with the parts ofthe vibrator, which condition, owing to the substantial character ottheguard20 is extremely remote. 7

Having thus fully described my invention, I claim: f

In a massage machine vibrator the combination of a handle portion, aprimary coil.

I carried by the disc and cooperating with the springmounting for'thevibrator, means for adjusting thecontact member, a guard car ried by thedisc andsubstantially'inclosing the vibrator parts and in electricalconnection with one thereof, and a battery within the handle and inelectrical contact with the guard. V

7 CHARLES W. KENT.

